Why Zero Ohm Resistors are used in Electronics ?
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- Опубликовано: 29 сен 2024
- In this short video, why zero ohm resistors are used in electrical and electronic circuits is explained.
Here are the three main reasons for using zero ohm resistors.
1) Automatic Placement
Many times, a different sub-circuits are connected using the jumpers. (Using the jumpers, it is possible to isolate the sub-circuits)
In mass manufacturing of the PCBs, the pick and place machines are used for placing the components. These machines can place only certain types of components.
To reduce the cost, it is not preferred to use a separate machines for attaching a jumpers.
Therefore, 0-ohm resistors are preferred in place of the jumpers.
2) To isolate sub-circuits during initial testing
During the initial testing of the PCB, it is quite possible that, one wants to test only certain block of the circuit. Or some times, the additional circuit block is not used intentionally for future revisions of the design.
In such case, to isolate the different sub-circuit blocks, a zero ohm resistor is used. Just by simply not connected the 0 ohm resistor, it is possible to isolate two circuit blocks.
3) To prevent reverse engineering:
By intentionally adding 0-ohm resistor in the PCB tracks, it is possible to prevent someone from copying the design to certain extent. Generally, by using a zero ohm resistors with no markings, the reverse engineering of the design becomes even harder.
For more information, related to different types of resistors, check this video:
• What is Resistor? Diff...
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For more information, please check the description of the video.
I am using zero ohm resistor as a fuse in my power electronics circuit. 😊
Why? Wouldn't be better to use an actual fuse instead?
@@RussellTeapot Tell that to hard drive manufacturers, that's what they do (place 0 ohm instead of fuse).
@@decaalv I'm a beginner in electronics so I'm genuinely confused: I assume that a 0 ohm it's not exactly 0 ohm and has some resistance, therefore for a large enough current the res will dissipate power and eventually fail open. But isnt such a behaviour unreliable, since technically it's not an intended use case for a res? After all, fuses are designed to fail open at a specific current and do that in a specific time
Ah. After looking a bit into it I found that I'm correct in thinking that a 0 ohm as a fuse is not a great idea, but it is sometimes used to save costs... :D
First
Sir Please I want to learn how to design my own schematic from my own idea how do I get started please sir I need your help
I must say your technique of description is just amazing 👌🏻👌🏻
In terms of EMC, we will use a 0 Ohm in-line resistor that if necessary, can be replaced with a ferrite bead or a resistor of higher value to reduce interference.
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I always wondered
I love electronics and tech since the 1970s.
Thought there is a ton of useful and informative information on the channel.
Getting it and understanding it through the heavy accent is very challenging couple with the audio qualitiy of the recording.
I would literally close my eyes to struggle to understand the words I'm hearing and realize I'm not getting the information I tuned into learn.
I treat electronics like medicine. You have to hear and understand or bad things happen resulting in your equipment exploding or you getting electrocuted.
I wish the channel well.
Couldn’t get it! Please slowly
Please check description of the video for more information, you will get it.
music annoying
Can you make the videos on 8051 microcontroller
Also thanks your videos helped me clear my semester